Heating and ventilating system.



D. D. HARR. HEATING AND VBNTILATINGSYSTEM. APPLICATION FILED APE.12, 1912 1,054,688, Patented Mar. 4, 1913.

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HEATING 'AND VENTILATING SYSTEM.

APPLICATION FILED APR. 12, 1912.

Patented Mar. 4, 1913.

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DOCK D. HARR, OF MINNEAPOLIS, MTNNESOTA.

HEATING AND VENTILATING SYSTEM.

Specification of Letters Patent.

Application filed April 12, 1912.

Patented Mar. 4,1913.

Serial No. 690,308.

To all whom. it may concern:

Be it known that I, Doox D. HARE, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Heating and Ventilating Systems; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

- My invention has for its object to provide certain improvements in the construction and operation of heating and ventilating systems, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

It is a well known fact that certain foul gases present in a room are heavier than air while others are lighter than air, so that some thereof will fall close to the floor while others will rise close to the ceiling. For instance, carbon dioxid (CO is heavier than air and will fall to the floor, while carbon monoxid (G0), which is a very poisonous and odorless gas, will rise to the ceiling.

Also, it is well known that there is a very material difference in the temperature of air which is close to the floor than that which is close to the ceiling.

My invention provides an extremely simple and eflicient means for carrying from the room both the heavy and the light noxious gases, and also affords means for more nearly equalizing the temperatures close to the floor and close to the ceiling and at intermediate points.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a diagrammatic view in elevation showing the complete heating and ventilating system in stalled in a room and building; Fig. 2 is a view partly in side elevation and partly in vertical section showing parts of the apparatus; and Fig. 3 is a vertical section takenapproximately on the line a m on Fig. 2.

The numeral 1 indicates a room or build ing in which the heating and ventilating apparatus is installed, and the numeral 2 indicates an ordinary chimney.

The numeral 3 indicates a heater of any suitable type, and the numeral 4 indicates a smoke pipe which leads from said heater and opens into the chimney 2.

The numeral 5 indicates a heating drum through which the horizontal upper portion of the smoke pipe 4 is passed.

The numeral 6 indicates a foul air pipe which extends from a point close to the floor line and opens into the lower portion of the heating drum 5, preferably, adjacent to that end thereof, which is nearest to the chimney.

The numeral 7 indicates a horizontally extended foul air discharge pipe, the outer end of which opens into the chimney 9. at a point above where the smoke pipe 4 opens into the chimney. The other end of the said foul air discharge pipe 7 extends through the near head of the drum 5 and terminates within the drum quite close to the opposite head thereof, and which is at a point laterally offset from the vertical axis of the foul air pipe 6.

The numeral 8 indicates a foul air pipe, the upper end of which terminates close to the ceiling and the lower end of which extends downward into the drum 5 and opens into the foul air discharge pipe 7 at the point offset from one open end of the latter. Within the foul air pipe 8 is a damper 9 and within the foul air discharge pipe 7 is a damper 10 which dampers are of the usual or any suitable construction and, as shown, are provided with projecting crank-equipped stems l1 and 12, respectively, having independent operating connectio-ns 13 and 14.

The. operation of the improved heating and ventilating apparatus above described is substantially as follows: The air in the drum 5 will be heated by the hot products of combustion which pass through the smoke pipe 4. This, in itself, will produce a draft tending to draw the foul air upward through the pipe 6 into the drum 5, and thence, into the foul air outlet pipe 7 but this draft is increased by the draft from the chimney 2. Here, it is important to note that the foul air is delivered into the chimney at a point above the point where the smoke or other products of combustion are delivered into the said chimney from the smoke pipe 4. This is import-ant because it permits the hot products of combustion to acquire an initial upward movementwithin the chimney before the relatively cold foul air is commingled therewith in the chimney. In this way, the foul air is taken up by the prodnets of combustion from the smoke pipe and carried therewith, upward through the chimney without interference with the draft.

It may be noted that the foul air in passing upward through the drum 5 into the open receiving end of the foul air outlet pipe 7, must take a tortuous course so that it comes into better contact with the smoke pipe and is more thoroughly heated. The

suction or draft produced in the foul air outlet pipe 7 has, in practice, been found, also sufficient to draw downward foul air from the top of the room or from a point close to the ceiling. For instance, with the damper 9 set approximately, as shown in Fig. 2, it has been found that on one side of the pipe 8, foul air will be drawn downward while on the other side thereof, a small amount of air will be permitted to pass upward from the drum 5, as indicated by the two arrows marked within said pipe 8 on Fig. 2. In this way, the foul air is moved from the upper as well as from the lower portion of the room, but the foul air drawn from the floor will very greatly exceed that drawn from the ceiling, so that there is a constant tendency to equalize the temperatures between the lower and upper portions of the room. When the damper 10 is closed, the damper 9 is turned into a vertical position, the drum and its connections do not operate as a ventilator, but then operate as an auxiliary heater and as a means for equalizing the temperatures between the floor and ceiling, it being, of course, understood that the equalization is produced by raising the cooled air from the floor and circulating the same within the room.

Experiments have determined that the above results are accomplished with the apparatus illustrated and described.

What I claim is:

1. In a heating and ventilating system, the combination with a smoke pipe and a drum heated therefrom, of a foul airpipe extending upward and opening into said drum, a foul air discharge pipe having an open receiving end within said drum, and a foul air pipe extended downward into said drum and opening into the said foul air discharge pipe.

2. In a heating and ventilating system, the combination with a smoke pipe and a drum heated therefrom, of a foul air pipe extending upward and opening into said drum, a foul air discharge pipe having an open receiving end within said drum, a foul air pipe extended downward into said drum and opening into the said foul air discharge pipe, and a damper in said upper foul air pipe.

3. In a heating and ventilating system, the combination with a smoke pipe and a drum heated therefrom, of a foul air pipe extending upward and opening into said drum, a foul air discharge pipe having an open receiving end within said drum, a foul air pipe extended downward into said drum and opening into said foul air discharge pipe, and independently operated dampers within said foul air discharge pipe and within said upper foul air pipe.

t. In a heating and ventilating system,

the combination with a smoke pipe, of a heating drum through which said smoke pipe is passed, a foul air pipe extended upward and opening into the bottom of said drum adjacent to one head thereof, a foul air discharge pipe located above said smoke pipe and extended into said drum and having an open inner end located near the other head of said drum, and a downwardly extended foul air pipe having its lower 'end extended through the top of said drum and opening into said foul air outlet pipe.

5. In a heating and ventilating system, the combination with a smoke pipe, of a heating drum through which said smoke pipe is passed, a foul air pipe extended upward and opening into the bottom of said drum adjacent to one head hereof, a foul air discharge pipe located above said smoke pipe and extended into said drum and having an open inner end located near the other head of said drum, and a downwardly extended foul air pipe having its lower end extended through the top of said drum and opening into said foul air outlet pipe, and independently operated intermediately pivoted dampers in said foul air outlet pipe and in said upper foul air pipe.

In testimony whereof I aflix my signature in presence of two witnesses:

DOCK D. HARI lVitnesses BERNICE Gr. WHEELER, HARRY D. KILGORE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

